224 MORPHOLOGY AND TAXONOMY OF BRYOPHYTES [Bot. Absts. 



MORPHOLOGY AND TAXONOMY OF ALGAE 



J. R. Schramm, Editor 



1577. Anonymous. A new kelp project at San Diego. Pacific Fisherman 17 6 : 58. 1919. 

 — A note on the organization of a new company to manufacture chemicals from kelps. — T. C. 

 Frye. 



1578. Delsman, H. C. The egg-cleavage of Volvox globator and its relation to the move- 

 ment of the adult form and to the cleavage types of Metazoa. Proc. Roy. Acad. Sci. Amster- 

 dam 21:243-251. 1918. [Transl. from Versl. K. Akad. Wetensch. Amsterdam, 1918.]— A 

 study of the egg-cleaves of Volvox globator shows that the process does not correspond to the 

 spiral type in the form in which it occurs in Metazoa. It is suggested that the dexiotropic 

 rotation of the Volvox colony results from the dexiotropic torsion of the egg cells during 

 cleavage, the main axis of the cells undergoing a slight deviation. The torsion during egg- 

 cleavage is regarded merely as "a very precociously appearing character of the adult form 

 related to the movement of the latter." — F. B. Wann. 



1579. Gloess, Paul. Les plantes marines. Leurs utilisations. [Utilization of marine 

 plants.] Bull. Inst. Oceanograph. Monaco 350. 80 p. 1919. — A statement of the present 

 treatment of marine plants in the derivation of useful products from them, and the uses of 

 these plants chiefly from the manufacturing and chemical points of view. The groups con- 

 sidered are the red and the brown algae, and Zostera and species related to it. About a 

 fourth of the article is devoted to the properties, treatment and uses of algin and the alginates. 

 — T. C. Frye. 



1580. Groves, James. Tolypella glomerata Leonh. in the Isle of Wight. Jour. Botany 

 57: 197. 1919. — Note on occurrence. This is apparently the first record of a species of 

 Tolypella on the island. — K. M. Wiegand. 



1581. Hirsch, Erwin. [Rev. of: Pascher, A. Flagelaten und Rhizopoden in ihren 

 gegenseitigen Beziehungen. Versuch einer Ableitung der Rhizopoden. (Flagellates and 

 Rhizopods and their relations.) Arch. Protistenk. 38: 1-88 Fig. 1-65. 1917.] Naturwiss. 

 7:74-75. 1919. 



1582. Satjvageau, C. Sur la dissemination et la naturalization de quelques algues marines. 

 [Dispersion and acclimatization of marine algae.] Bull. Inst. Oceanograph. Monaco 342. 

 #8 p. 1918. — The motility of the reproductive cells is an inconsiderable factor in dispersion, 

 in comparison with currents; the red algae are therefore not at any material disadvantage 

 on account of their non-motile sperms and spores. Extension of range is largely by means 

 of reproducing fragments carried by currents. Shore algae may be carried through attach- 

 ment to floating supports, among which may be ships. When pieces of algae are transp ^rted 

 to situations unsuitable for reproduction the species may maintain itself vegetatively for 

 years. — T. C. Frye. 



MORPHOLOGY AND TAXONOMY OF BRYOPHYTES 



Alexander W. Evans, Editor 



1583. Evans, Alexander W. Noteworthy Lejeuneae from Florida. Amer. Jour. Bot. 

 5: 131-150. Fig. 1-5. 1918.— Six additions to the Lejeuneae of Florida, all collected by S. 

 Rapp in the vicinity of Sanford, are recorded, the total number now known from the state 

 being 44. The additions include Lejeunea longifissa Steph., previously known rrom Cuba, 

 Rectolejeunea Maxonii Evans, previously known from Jamaica only but now known also 

 from Alabama and Porto Rico, and the following species proposed as new: Cololejeunea <'on- 

 tractiloba, Lejeunea cladogyna, Euosmolejeunea parvula and Ptychocoleus heterophyllus. Of 

 these new species Lejeunea cladogyna occurs also in Porto Rico and Ptychocoleus heterophyllus, 



